model

type Article struct {
	gorm.Model

	Category Category
	Title    string `gorm:"type:varchar(100);not null" json:"title"`
	Content  string `gorm:"type:longtext;" json:"content"`
	Desc     string `gorm:"type:varchar(200);not null" json:"desc"`
	Cid      int    `gorm:"type:int;not null" json:"cid"` // categoryId
}

type Category struct {
	gorm.Model

	Name string `gorm:"type:varchar(100);not null" json:"name"`
}

type User struct {
	gorm.Model

	UserName string `gorm:"type:varchar(20);not null" json:"username" validate:"required,min=4,max=12"`
	Password string `gorm:"type:varchar(100);not null" json:"password" validate:"required,min=4,max=120"`
	Email    string `gorm:"type:varchar(100);not null" json:"email"`
	Phone    string `gorm:"type:varchar(100);not null" json:"phone"`
	Role     int    `gorm:"type:int;not null" json:"role" validate:"min=0,max=2"`
}